The discussion revolves around calculating the electric field intensity on the surface of a charged sphere, given its electric potential. The problem involves understanding the relationship between electric potential and electric field strength, particularly in the context of a sphere with a specified radius and charge.
The discussion is ongoing, with participants expressing confusion about the formulas and seeking clarification on the derivation of the electric field intensity. Some guidance has been offered regarding the dimensions of the quantities involved, and there is an acknowledgment of the need to verify the correctness of the equations used.
Participants note discrepancies in the formulas provided and question the accuracy of the original poster's equations. There is a focus on ensuring that the mathematical relationships are correctly understood, particularly in the context of homework constraints.
##F##=##\frac{K Qq}{r^2}##ehild said:Do you remember Coulomb's Law?
They took the equation ##E##=##\frac{1}{4πε_0}\frac{q}{R^2}## and rewrote it in that form. You can check they are equivalent. This was useful because the numerator is the same as V2 and the denominator only involves the charge and some constants. Since V and q are known, this gives a quick way of finding E.gracy said:I am still clueless about my question in op.
##E##=##\frac{\left(\frac{1}{4πε0}\frac{q}{R}\right)^2}{\frac{q}{4πε0}}##